Thin place detector



K July 5 1932. H. POPE ET A; 1,866,053

' THIN- PLACE DETECTOR Filed Oct. 25, 1950 6 ll 22 l9 i7 23 5 ,EZ}(7 1.

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Patented July 5, 1932 UNITE s'rTES.

THIN PLACE na'rno'ron Application filed. October 25, 1930. Serial No.491,278. ii

This invention aims to provide a thin place detector which can bemanufactured cheaply out of stock materials and be attached to a loom,without working any changes in the .5 loom, and, more generally, toprovide a device which will stop a loom whenever a thread is dropped orthe filling fails.

It is within the province of the disclosure to improve generally and toenhance the utility of devices of that type to which the inventionappertains.

With the above and other objects in view, which will appear as thedescription proceeds, the invention resides in the combination and 16arrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, may be made within thescope of what is claimed, without departing from the spirit of theinvention.

In the accompanying drawing: Figure 1 shows in elevation a loom whereonthe device forming the subject matter of this application has beenmounted, parts appearing in section;

Figure 2 is a top plan of the device described and claimed;

Figure 3 is an elevation wherein parts are section; Figure 4 is anelevation, looking at right angles to the showing of Figure 3.

The device forming the subject matter of this application may be mountedon looms of many different kinds, but, by way of illustra- 'so in tion,there is shown in the drawing, a loom 1- including a breast beam 2. Thefabric is shown at 3 and the weaving point is marked by the numeral 4.The numeral 5 designates an electrical circuit in which is interposedthe mechanism 6 by which the stop motion is controlled.

No novelty is claimed for the parts hereinbefore described, saving in sofar as they may enter into combination with parts hereinafter set forth.

The numeral 7 marks a bracket, which may be made of metal. The bracket 7is provided at its top with a thinned flange 8, and

50 the bracket has a lateral wing 9. An insulatingtube 10 extendsupwardly through the wing 9 and then forwardly, toward theloom 1, in ahorizontaldirection, as indicated in Figure 3 and as theredesignated bythe numeral 11. f .n i A conducting member is provided andv may be apiece of stiff wire. The conducting member includes a verticalbody 12which extends upwardly through the vertical part of the insulating tube10; The lower end of the body 12. of the conducting member is connectedelectrically at 14 to the circuit 5. At its upper end, the conductingmember has a substantially horizontal extension 15 disposed at rightangles to the body 12 of the conducting member and extended toward theloom 1. This extension 15 of the conducting member carries a cross piece16 arrangedat right angles to the extension, as shown in Figure2 andslanted downwardly a little, as shown in Figure .4, the position of thecross piece 16, however, being substantially horizontal. At its outerend, the cross piece 16 of the conductingmember has anupstandingabutment 17. The reason for calling this part an abutment will be mademanifest hereinafter. Thefconducting member is steadied andheld in placeby a yoke 18 which slants downwardly as shown in Figure 4:. The upperend ofthe yoke .18 has ahook 19 that extends around the horizontal part11 of the insulating tube 10, and, therefore,around the extension 15 oftheconductingmember. At its inner end the'yoke 18 has an eye 20 throughwhich passes a securing element 21,,such as a bolt, holding the yoke 18on the bracket 7. v

The numeral 22 marks a shaftdisposed in an approximately horizontalposition and mounted'torock in the flange 8 of the bracket: 7 .Theshaft22 is provided at one end with. an arm 23, located at right anglesto theshaft, the arm having at its end a depending finger 1 24l'which bears onthe fabric 3 near to the weaving point 4; The arm 23 extends-across themember 16 butis spaced therefrom bya very small distance, so that,ordinarily, there is no electrical contact betweenzthe parts 16 and 23.The shaft 22 and the arm 23 may be conveniently and advantageouslymade-l00 out of a piece of wire, and it is 1n order to limit lateral orhorizontal flexing of the arm 23 that the abutment 17 is provided, onthe end of the cross piece 16 of the conducting member.

The arm 23 is bent upon itself, intermediate its ends, near to the shaft22, to form a downfirm seat in the bracket 7 and has a squared end 29which goes into the breast beam 2, and prevents the bushing fromturning. Through the bushing 28 extends a securing device 30, such as abolt, which holds the insulating bushing 28, and consequently thebracket 7, 0n the breast beam 2.

In practical operation, the finger 2 1 of the arm 23 rests on the fabric3 near to the weaving point 4, the arm 23 being spaced a short distance,vertically, from the cross piece 16 of the conducting member 12. Thereis, therefore, under such circumstances, no electrical contact betweenthe parts 16 and 23. If,'however, the filling fails, or if a thin placein the fabric 3 results from any other cause, the arm 23 is permitted toswing downwardly, and electrical contact is made between the cross piece16 and the arm 23. Then, the circuit 5 is closed through the body 12 ofthe conducting member, the extension 15, the cross piece 16, the arm 23,the shaft 22, the bracket 7 and the securing element 21. If desired, thebushing 28 may be made of conducting material, the circuit may bepermitted to ground through the frame of the loom, and the connectionshown at 521 in Figure 3 may be omitted, this being a change readilyobvious from the drawing, without making a separate figure toshow it.Preferably, however, circuit is arranged as indicated in Figure 3. a

What is claimed is:

A thin place detector for looms, comprising a bracket, meansforsecuringsaid bracket to a loom, av conducting member including a bodymounted in the bracket, the body havtures.

JOHN H. POPE. BEE MORGAN.

ing a rectangular extension provided with a 3 cross piece arrangedapproximately parallel to the bracket, the cross piece having anupstanding abutment,an arm mounted to swing on the bracket and extendedabove and across the cross piece, at one side of the abutment, the armhaving means for engaging the fabric in which the thin place occurs, thearm being spaced from the cross piece by said means, while said means isin engagement with the fabric, the abutment limiting the lateralmovement of the arm and keeping the arm above the cross piece, the armswinging into direct electrical engagement with the cross piece when athin placeis encountered,

, means for connecting the conducting member

